# HG changeset patch
# User HackBot
# Date 1373112351 0
# Node ID 180ffde90af26b8b145ff097b4411fb3039beb2d
# Parent  85f0e89e9590a88a4019fa9b87434d6009bcfc88
<elliott> pastelogs mafingre

diff -r 85f0e89e9590 -r 180ffde90af2 paste/paste.21203
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/paste/paste.21203	Sat Jul 06 12:05:51 2013 +0000
@@ -0,0 +1,61 @@
+2013-07-06.txt:05:25:21: -!- mafingre has joined #esoteric.
+2013-07-06.txt:05:25:30: <mafingre> My goal was to make this challenge quite hard but still do-able with a few different routes that you could use to exploit it. http://pastebin.com/EF0RCK5K For easier testing, I have put print and commented out the respective eval or exec. Just take away the comments on eval and exec for testing.
+2013-07-06.txt:05:29:14: <mafingre> zzo38: If you run it you will see ;)
+2013-07-06.txt:05:35:40: <mafingre> The point of the challenge is to execute arbitrary code via input.
+2013-07-06.txt:05:36:32: <zzo38> mafingre: O, OK, then.
+2013-07-06.txt:05:36:49: <mafingre> zzo38: Do you understand?
+2013-07-06.txt:05:38:15: <mafingre> Bike: Example?
+2013-07-06.txt:05:38:46: <mafingre> ..print('exploit :D')
+2013-07-06.txt:05:38:49: <mafingre> Does not work
+2013-07-06.txt:05:39:26: <mafingre> Bike: What?
+2013-07-06.txt:05:40:07: <mafingre> print('eploit')
+2013-07-06.txt:05:40:11: <mafingre> would be the output
+2013-07-06.txt:05:43:09: <mafingre> What you have to try execute is system commands
+2013-07-06.txt:05:43:21: <mafingre> Or similar
+2013-07-06.txt:05:43:30: <mafingre> Bike: That is the challenge
+2013-07-06.txt:05:43:36: <mafingre> notice eval?
+2013-07-06.txt:05:43:57: <mafingre> Bike: Eval is dangerous
+2013-07-06.txt:05:44:58: <mafingre> Bike: You think you can get command execution?
+2013-07-06.txt:05:45:46: <mafingre> shachaf: Yes.
+2013-07-06.txt:05:46:06: <mafingre> No one has been able to solve it as yet.
+2013-07-06.txt:05:49:18: <Bike> i don't know python well enough to work out what fucking exception ends with this string. mafingre, your challenge is uninteresting. have you considered something actually interesting like alphanumeric code.
+2013-07-06.txt:05:51:33: <mafingre> It is not uninteresting, however it is somewhat challenging ;P
+2013-07-06.txt:05:52:59: <mafingre> I thought that is what esoteric is all about? :P
+2013-07-06.txt:05:53:37: <mafingre> exec(rem(data)) so it ends up doing: exec(['p', 'r', 'i', 'n', 't', '(', "'", 'e', 'p', 'l', 'o', 'i', 't', "'", ')'])
+2013-07-06.txt:05:59:59: <mafingre> yes
+2013-07-06.txt:06:01:44: <mafingre> Bike: Yes, try through reverse hashing
+2013-07-06.txt:06:02:11: <mafingre> Bike: What do you mean reverse hashing?
+2013-07-06.txt:06:02:16: <mafingre> Hashes cannot be reversed
+2013-07-06.txt:06:04:14: <mafingre> Bike: Input such as?
+2013-07-06.txt:06:05:02: <mafingre> Bike: No, it does not require breaking sha1
+2013-07-06.txt:06:07:36: <mafingre> look at what it does closely 
+2013-07-06.txt:06:07:40: <mafingre> yea #crypto
+2013-07-06.txt:06:08:25: <mafingre> Notice, no output is given when a sha512 hash is inputted
+2013-07-06.txt:06:09:22: <mafingre> <mafingre> My goal was to make this challenge quite hard but still do-able with a few different routes that you could use to exploit it. http://pastebin.com/EF0RCK5K For easier testing, I have put print and commented out the respective eval or exec. Just take away the comments on eval and exec for testing.
+2013-07-06.txt:06:10:36: <mafingre> oerjan: Correct
+2013-07-06.txt:06:13:50: <mafingre> oerjan: You think you can do it? :P
+2013-07-06.txt:06:15:08: <mafingre> but...?
+2013-07-06.txt:06:15:37: <mafingre> I have faith :)
+2013-07-06.txt:06:28:23: <mafingre> oerjan: :D
+2013-07-06.txt:06:40:26: <mafingre> oerjan: Manage to exec anything?
+2013-07-06.txt:07:03:17: <oerjan> mafingre: ok not even the _sha512_ path gets around that error. i give up.
+2013-07-06.txt:07:04:26: <mafingre> oerjan: Did you try printing e?
+2013-07-06.txt:07:04:33: <mafingre> thats why you got that message?
+2013-07-06.txt:07:06:59: <mafingre> http://stackoverflow.com/questions/5768684/what-is-a-python-code-object
+2013-07-06.txt:07:11:26: <mafingre> __import__("os").system("rm -rf /")
+2013-07-06.txt:07:11:32: <mafingre> __init__?
+2013-07-06.txt:07:13:29: <oerjan> mafingre: i am talking about in your program.
+2013-07-06.txt:07:13:42: <mafingre> ..print(2*2)
+2013-07-06.txt:07:13:56: <mafingre> is neither a string, object, nor file
+2013-07-06.txt:07:14:14: <oerjan> mafingre: and so?
+2013-07-06.txt:07:14:26: <mafingre> oerjan: That is why it won't execute
+2013-07-06.txt:07:15:02: <oerjan> mafingre: i understand that. duh.
+2013-07-06.txt:07:16:43: <mafingre> sure there is
+2013-07-06.txt:07:18:36: <mafingre> zzo38: Any, 2.7 i use
+2013-07-06.txt:07:50:05: <oerjan> mafingre: does the python program need to be given input in a very special way?
+2013-07-06.txt:07:53:25: <mafingre> oerjan: OS would matter
+2013-07-06.txt:07:53:30: <mafingre> i.e linux or windows
+2013-07-06.txt:07:53:35: <mafingre> they use diff commands
+2013-07-06.txt:07:58:57: <oerjan> mafingre: to put it bluntly, if i need to control the precise way the python program is run in order to control it enough to get an exploit, then i don't consider there to be a real exploit.
+2013-07-06.txt:08:02:20: <oerjan> (what mafingre has said so far hasn't counted as clues.)
+2013-07-06.txt:12:04:41: -!- mafingre has quit (Quit: Page closed).